package com.michaellou.encript;

import java.security.MessageDigest;

public class MD5Support {
	private static char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
			'a', 'b', 'c', 'd', 'e', 'f' };
	public final static String MD5(String s) {

		try {
			byte[] strTemp = s.getBytes("UTF-8");
			//byte[] strTemp = s.getBytes();
			MessageDigest mdTemp = MessageDigest.getInstance("MD5");
			mdTemp.update(strTemp);
			byte[] md = mdTemp.digest();
			int j = md.length;
			char str[] = new char[j * 2];
			int k = 0;
			for (int i = 0; i < j; i++) {
				byte byte0 = md[i];
				str[k++] = hexDigits[byte0 >>> 4 & 0xf];
				str[k++] = hexDigits[byte0 & 0xf];
			}
			return new String(str);
		} catch (Exception e) {
			return null;
		}
	}
	public final static String MD5(String s,String encoding) {

		try {
			byte[] strTemp;
			if(encoding!=null)
				strTemp= s.getBytes(encoding);
			else
				strTemp= s.getBytes();
			//byte[] strTemp = s.getBytes();
			MessageDigest mdTemp = MessageDigest.getInstance("MD5");
			mdTemp.update(strTemp);
			byte[] md = mdTemp.digest();
			int j = md.length;
			char str[] = new char[j * 2];
			int k = 0;
			for (int i = 0; i < j; i++) {
				byte byte0 = md[i];
				str[k++] = hexDigits[byte0 >>> 4 & 0xf];
				str[k++] = hexDigits[byte0 & 0xf];
			}
			return new String(str);
		} catch (Exception e) {
			return null;
		}
	}
	public static void main(String[] args) {
		String pt=""+System.nanoTime();
		String con=MD5Support.MD5(pt);
		String fir5=con.substring(0,5);
		String lst5=con.substring(con.length()-5,con.length());
		
		System.out.println(con+"|\n"+Integer.parseInt(fir5,16)%32+"|"+Integer.parseInt(lst5,16)%32);
	}
}
